Re: [PATCH] xfstests: exclude hfs/hfsplus from generic/339 run

[Viacheslav Dubeyko <slava@dubeyko.com>]

On Thu, 2026-09-10 at 02:57 -0700, Christoph Hellwig wrote:
> On Wed, Sep 09, 2026 at 05:04:50PM -0700, Viacheslav Dubeyko wrote:
> > The dirhash_collide generates filenames from arbitrary random
> > bytes (only '.' and '/' are filtered out), which are not valid
> > UTF-8 in general. Catalog names on both classic HFS and HFS+ are
> > Unicode. Feeding random bytes causes fsck to report "Illegal name"
> > or catalog corruption that has nothing to do with directory
> > hash-collision handling, which is what this test is actually meant
> > to exercise.
> 
> If user file name creation manage to trigger fsck complaints, you
> need
> to righten the input checks in the file systems first to fix this.
> 
> We can then find a programmatic way to deal with these rejects in
> xfstests, as ext4/f2fs in case insensiive mode probably have the same
> issue.

I see your point. And I really like your suggestion. But what is your
vision of the proper way to check the validity of Unicode symbols?

Thanks,
Slava.